As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ELECTRICAL BURNING SMELL INTERMITTENT AT ROW 25ABC. EXIT SIGN FLICKERING. PERFORMED CARD 72L00021001. FOUND SEVERAL BURNT AND DISCOLORED LIGHT BULBS AT FLIGHT ATTENDANT CALL SIGN MOUNTED ON EMERGENCY EXIT SIGN. REMOVED AND REPLACED BULBS PER AMM 33-24-00, 33-25-02.